Side door



FIG. 1 is a perspective view of a side door, showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is another side view thereof; and,

FIG. 5 is a front view thereof.

The broken lines in the drawing views represent unclaimed portions of a side door, which are included for the purpose of illustrating unclaimed environment only, and forms no part of the claimed design. 

CLAIM We claim the ornamental design for a side door, as shown and described. 